io.druid.query.aggregation

Class AggregatorUtil

java.lang.Object

io.druid.query.aggregation.AggregatorUtil

public class AggregatorUtil
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static byte	APPROX_HIST_CACHE_TYPE_ID
static byte	APPROX_HIST_FOLDING_CACHE_TYPE_ID
static byte	CARD_CACHE_TYPE_ID
static byte	COUNT_CACHE_TYPE_ID
static byte	DISTINCT_COUNT_CACHE_KEY
static byte	DOUBLE_FIRST_CACHE_TYPE_ID
static byte	DOUBLE_LAST_CACHE_TYPE_ID
static byte	DOUBLE_MAX_CACHE_TYPE_ID
static byte	DOUBLE_MIN_CACHE_TYPE_ID
static byte	DOUBLE_SUM_CACHE_TYPE_ID
static byte	FILTERED_AGG_CACHE_TYPE_ID
static byte	FLOAT_FIRST_CACHE_TYPE_ID
static byte	FLOAT_LAST_CACHE_TYPE_ID
static byte	FLOAT_MAX_CACHE_TYPE_ID
static byte	FLOAT_MIN_CACHE_TYPE_ID
static byte	FLOAT_SUM_CACHE_TYPE_ID
static byte	HIST_CACHE_TYPE_ID
static byte	HYPER_UNIQUE_CACHE_TYPE_ID
static byte	JS_CACHE_TYPE_ID
static byte	LONG_FIRST_CACHE_TYPE_ID
static byte	LONG_LAST_CACHE_TYPE_ID
static byte	LONG_MAX_CACHE_TYPE_ID
static byte	LONG_MIN_CACHE_TYPE_ID
static byte	LONG_SUM_CACHE_TYPE_ID
static byte	SKETCH_MERGE_CACHE_TYPE_ID
static byte	STRING_SEPARATOR
static byte	TIMESTAMP_CACHE_TYPE_ID
static byte	VARIANCE_CACHE_TYPE_ID

Constructor Summary

Constructors

Constructor and Description
AggregatorUtil()

Method Summary

Modifier and Type	Method and Description
static io.druid.java.util.common.Pair<List<AggregatorFactory>,List<PostAggregator>>	condensedAggregators(List<AggregatorFactory> aggList, List<PostAggregator> postAggList, String metric)
static DoubleColumnSelector	getDoubleColumnSelector(ColumnSelectorFactory metricFactory, ExprMacroTable macroTable, String fieldName, String fieldExpression, double nullValue)
static FloatColumnSelector	getFloatColumnSelector(ColumnSelectorFactory metricFactory, ExprMacroTable macroTable, String fieldName, String fieldExpression, float nullValue)
static LongColumnSelector	getLongColumnSelector(ColumnSelectorFactory metricFactory, ExprMacroTable macroTable, String fieldName, String fieldExpression, long nullValue)
static List<PostAggregator>	pruneDependentPostAgg(List<PostAggregator> postAggregatorList, String postAggName) returns the list of dependent postAggregators that should be calculated in order to calculate given postAgg

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STRING_SEPARATOR

public static final byte STRING_SEPARATOR

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Constant Field Values

COUNT_CACHE_TYPE_ID

public static final byte COUNT_CACHE_TYPE_ID

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LONG_SUM_CACHE_TYPE_ID

public static final byte LONG_SUM_CACHE_TYPE_ID

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DOUBLE_SUM_CACHE_TYPE_ID

public static final byte DOUBLE_SUM_CACHE_TYPE_ID

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DOUBLE_MAX_CACHE_TYPE_ID

public static final byte DOUBLE_MAX_CACHE_TYPE_ID

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Constant Field Values

DOUBLE_MIN_CACHE_TYPE_ID

public static final byte DOUBLE_MIN_CACHE_TYPE_ID

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Constant Field Values

HYPER_UNIQUE_CACHE_TYPE_ID

public static final byte HYPER_UNIQUE_CACHE_TYPE_ID

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Constant Field Values

JS_CACHE_TYPE_ID

public static final byte JS_CACHE_TYPE_ID

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Constant Field Values

HIST_CACHE_TYPE_ID

public static final byte HIST_CACHE_TYPE_ID

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Constant Field Values

CARD_CACHE_TYPE_ID

public static final byte CARD_CACHE_TYPE_ID

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Constant Field Values

FILTERED_AGG_CACHE_TYPE_ID

public static final byte FILTERED_AGG_CACHE_TYPE_ID

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LONG_MAX_CACHE_TYPE_ID

public static final byte LONG_MAX_CACHE_TYPE_ID

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LONG_MIN_CACHE_TYPE_ID

public static final byte LONG_MIN_CACHE_TYPE_ID

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FLOAT_SUM_CACHE_TYPE_ID

public static final byte FLOAT_SUM_CACHE_TYPE_ID

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FLOAT_MAX_CACHE_TYPE_ID

public static final byte FLOAT_MAX_CACHE_TYPE_ID

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Constant Field Values

FLOAT_MIN_CACHE_TYPE_ID

public static final byte FLOAT_MIN_CACHE_TYPE_ID

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Constant Field Values

SKETCH_MERGE_CACHE_TYPE_ID

public static final byte SKETCH_MERGE_CACHE_TYPE_ID

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Constant Field Values

DISTINCT_COUNT_CACHE_KEY

public static final byte DISTINCT_COUNT_CACHE_KEY

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Constant Field Values

FLOAT_LAST_CACHE_TYPE_ID

public static final byte FLOAT_LAST_CACHE_TYPE_ID

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Constant Field Values

APPROX_HIST_CACHE_TYPE_ID

public static final byte APPROX_HIST_CACHE_TYPE_ID

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APPROX_HIST_FOLDING_CACHE_TYPE_ID

public static final byte APPROX_HIST_FOLDING_CACHE_TYPE_ID

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DOUBLE_FIRST_CACHE_TYPE_ID

public static final byte DOUBLE_FIRST_CACHE_TYPE_ID

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DOUBLE_LAST_CACHE_TYPE_ID

public static final byte DOUBLE_LAST_CACHE_TYPE_ID

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FLOAT_FIRST_CACHE_TYPE_ID

public static final byte FLOAT_FIRST_CACHE_TYPE_ID

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LONG_FIRST_CACHE_TYPE_ID

public static final byte LONG_FIRST_CACHE_TYPE_ID

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LONG_LAST_CACHE_TYPE_ID

public static final byte LONG_LAST_CACHE_TYPE_ID

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TIMESTAMP_CACHE_TYPE_ID

public static final byte TIMESTAMP_CACHE_TYPE_ID

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VARIANCE_CACHE_TYPE_ID

public static final byte VARIANCE_CACHE_TYPE_ID

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Constant Field Values

Constructor Detail

AggregatorUtil

public AggregatorUtil()

Method Detail

pruneDependentPostAgg

public static List<PostAggregator> pruneDependentPostAgg(List<PostAggregator> postAggregatorList,
                                                         String postAggName)

returns the list of dependent postAggregators that should be calculated in order to calculate given postAgg

Parameters:

postAggregatorList - List of postAggregator, there is a restriction that the list should be in an order such that all the dependencies of any given aggregator should occur before that aggregator. See AggregatorUtilTest.testOutOfOrderPruneDependentPostAgg for example.

postAggName - name of the postAgg on which dependency is to be calculated

Returns:

the list of dependent postAggregators

condensedAggregators

public static io.druid.java.util.common.Pair<List<AggregatorFactory>,List<PostAggregator>> condensedAggregators(List<AggregatorFactory> aggList,
                                                                                                                List<PostAggregator> postAggList,
                                                                                                                String metric)

getFloatColumnSelector

public static FloatColumnSelector getFloatColumnSelector(ColumnSelectorFactory metricFactory,
                                                         ExprMacroTable macroTable,
                                                         String fieldName,
                                                         String fieldExpression,
                                                         float nullValue)

getLongColumnSelector

public static LongColumnSelector getLongColumnSelector(ColumnSelectorFactory metricFactory,
                                                       ExprMacroTable macroTable,
                                                       String fieldName,
                                                       String fieldExpression,
                                                       long nullValue)

getDoubleColumnSelector

public static DoubleColumnSelector getDoubleColumnSelector(ColumnSelectorFactory metricFactory,
                                                           ExprMacroTable macroTable,
                                                           String fieldName,
                                                           String fieldExpression,
                                                           double nullValue)